Speaking about solving this puzzle is equivalent to the Masterball.Its production started no later than 1982 since it was mentioned in David Signmaster's Cubic Circular of that year.There was also a soviet (armenian to be more precise) version, named "Volshebnyi shar" (Magic Ball).That version had no markings as those in mage 4.The original price is based on the official exchange rate (0.6 rubels per dollar) although in socialist time this was completely theoretical. The price (in rubels) is printed on the packaging, shown in images 5-6 which is actually a modern copy.

Diameter: 70 mmWeight: 91 grams

Price Tracking Data

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